Funfetti Blondies with Buttercream Frosting - The Cook's Cook

Ingredients

• Vegetable oil or nonstick spray, for greasing pan
• 205 grams (7 ounces wt) white chocolate
• 120 grams (4 ounces wt) soft butter
• 2 large eggs
• 75 grams (6 tablespoons) granulated sugar
• 10 ml (2 teaspoons) vanilla extract
• 160 grams (1 cup/5.6 ounces wt) all-purpose flour
• 5 ml (1 teaspoon) salt
• 55 grams (2 ounces wt) color edible confetti
• 355 grams (1 1/2 cups) icing/confectioners sugar
• 175 grams (6 ounces) soft butter
• 5 ml (1 teaspoon) vanilla extract
• 15-20 ml (3-4 teaspoons) heavy cream
• Food coloring, a few drops as needed
• Funfetti or colored sprinkles, for garnishing